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Publications (78)
Timely and accurate return of viral load (VL) results to adolescents living with HIV (ALHIV) is essential for early detection of adherence challenges and treatment failure. Our cross-sectional study evaluated VL data of ALHIV, ages 15–19 years, enrolled in six care facilities in Kiambu and Nakuru Counties in Kenya. We summarized the proportion of r...
Integrating and sustaining evidence-based interventions (EBIs) in routine care is crucial to improving HIV treatment outcomes among youth living with HIV (YLH). However, EBIs are often not sustained post clinical trial. An Adolescent Transition Package (ATP) delivered by health care workers (HCWs) and tested in Kenya in 2021 significantly improved...
Background
Despite immune restoration after initiation of antiretroviral treatment (ART), the risk of tuberculosis (TB) persists in children with HIV (CHIV). We determined patterns of immune restoration of mycobacteria-specific T cells following ART in CHIV.
Methods
CD4 and CD8 T-cell activation and memory phenotype and functional profiles before...
Background
The Fogarty International Center-led Adolescent HIV Implementation Science Alliance (AHISA) supports region-/country-specific implementation science (IS) alliances that build collaborations between research, policy, and program partners that respond to local implementation challenges. AHISA supported the development of seven locally-led...
Objectives
This study investigates the prevalence of the use of reusable menstrual materials in LMICs, examines differences in prevalence between countries and areas, and identifies individual and country-level factors associated with their use.
Methods
Data from Multiple Indicator Cluster surveys conducted between 2017 and 2020 in LMICs were used...
Background: Despite progress in HIV awareness among adolescents, gaps persist in knowledge, treatment adherence, and mental health support. While current social media apps show promise for information dissemination, privacy and confidentiality concerns remain a barrier. In 2020, WHO, UNICEF, UNFPA, and UNESCO published an inter-agency framework to...
We examined the association between serum aflatoxin B1‐lysine adduct (AFB1‐lys) levels in pregnant women and adverse pregnancy outcomes (low birthweight, miscarriage and stillbirth) through a nested matched case–control study of pregnant women enroled at ≤28 weeks' gestation in Mombasa, Kenya, from 2017 to 2019. Cases comprised women with an advers...
During the COVID-19 pandemic, HIV programs scaled up differentiated service delivery (DSD) models for people living with HIV (PLHIV). We evaluated the effects of COVID-19 on HIV service delivery and viral suppression in facilities in Northern Nigeria, and determined factors associated with viral suppression among adolescents and adults. We analysed...
Introduction
Adverse birth outcomes particularly preterm births and congenital anomalies, are the leading causes of infant mortality globally, and the burden is highest in developing countries. We set out to determine the frequency of adverse birth outcomes and the risk factors associated with such outcomes in a cohort of pregnant women in Kenya....
Introduction
Adolescents with HIV in sub-Saharan Africa face challenges transitioning to adult HIV care, which can affect long-term HIV care adherence and retention. An adolescent transition package (ATP) focused on transition tools can improve post-transition clinical outcomes, but its implementation costs are unknown.
Methods
We estimated the av...
Women infected during pregnancy with TORCH (Toxoplasmosis, Other, Rubella, Cytomegalovirus, and Herpes simplex viruses) pathogens have a higher risk of adverse birth outcomes including stillbirth / miscarriage because of mother-to-child transmission. To investigate these risks in pregnant women in Kenya, we analyzed serum specimens from a pregnancy...
Introduction
Disclosure of HIV status to adolescents living with HIV has been associated with improved treatment outcomes. However, there are limited data regarding the experiences of, perceptions of, and preferences for the process of disclosure of HIV status among adolescents and young adults living with HIV (AYLH), especially in sub-Saharan Afri...
Objective
Evaluate effects of TB-HIV co-treatment on clinical and growth outcomes in children with HIV (CHIV).
Design
Longitudinal study among Kenyan hospitalized ART-naive CHIV in the PUSH trial (NCT02063880).
Methods
CHIV started ART within 2 weeks of enrollment; Anti-TB therapy was initiated based on clinical and TB diagnostics. Children were...
Purpose
We evaluated the effect of multi-month dispensing (MMD) on viral suppression among newly enrolled adolescents and adults with HIV in 11 northern Nigerian states.
Patients and Methods
We conducted a retrospective analysis of longitudinal data from 75 health facilities. We abstracted electronic medical records for patients ≥10 years, initiat...
Objectives
With optimized antiretroviral treatment youth living with HIV (YLH) now spend most of their time in schools, making schools an important venue to optimize outcomes. We evaluated school support for YLH.
Methods
We conducted surveys with public secondary/high schools in 3 Kenyan counties (Nairobi, Homa Bay, and Kajiado) to determine polic...
Background
The COVID-19 pandemic resulted in disruptions to routine HIV services for youth living with HIV (YLH), provoking rapid adaptation to mitigate interruptions in care. The Adolescent Transition to Adult Care for HIV-infected adolescents (ATTACH) study (NCT03574129) was a hybrid I cluster randomized trial testing the effectiveness of a healt...
Introduction
Disclosure of one's HIV status to others is often difficult due to the fear of stigma. However, disclosure may facilitate receiving social support. Many youth living with HIV (YLH) are enrolled in school as better treatments have improved the health and survival of children with HIV. There is no structured process for disclosure at sch...
Differentiated service delivery (DSD) and multi-month dispensing (MMD) of antiretroviral therapy (ART) have improved treatment adherence and viral suppression among people living with HIV (PLHIV), and service delivery efficiency. We assessed the experiences of PLHIV and providers with DSD and MMD in Northern Nigeria. We conducted in-depth interview...
Mortality and loss to follow-up (LTFU) among adolescents and youth living with HIV (AYLHIV) remain high. We evaluated mortality and LTFU during the test and treat era. We abstracted medical records of AYLHIV for 10-24 years between January 2016 and December 2017 in 87 HIV clinics in Kenya. Using competing risk survival analysis, we compared inciden...
BACKGROUND
Mobile technology can support HIV care, but studies in youth living with HIV (YLWH) are limited.
OBJECTIVE
We developed a facilitated WhatsApp group intervention (named Vijana-SMART) for YLWH, grounded in social support theory and guided by YLWH’s design recommendations. This paper evaluates the intervention’s acceptability and pre-post...
Background
Mobile technology can support HIV care, but studies in youth are limited. In 2014, youth receiving HIV care at several health care facilities in Nairobi, Kenya spontaneously formed peer support groups using the social media platform WhatsApp.
Objective
Inspired by youth-initiated groups, we aimed to evaluate the use of WhatsApp to deliv...
Objective
HIV stigma and discrimination is widespread in sub‐Saharan Africa and is associated with poor clinical outcomes. Schools play a critical role in the life of youth and have been identified as a potentially stigmatising environment. We sought to explore school HIV stigma drivers, facilitators, manifestations and outcomes among youth living...
Youth living with HIV (YLHIV) report that negative interactions with health care workers (HCWs) affects willingness to return to care. This stepped wedge randomized trial evaluated effectiveness of a standardized patient actor (SP) HCW training intervention on adolescent engagement in care in Kenya. HCWs caring for YLHIV at 24 clinics received trai...
Background
There is mixed evidence on the influence of self-disclosure of one’s HIV status on mental health, health behaviours and clinical outcomes. We studied the patterns of self-disclosure among parents living with HIV, and factors that influence parental disclosure.
Methods
This mixed-methods study was among adults in HIV care participating i...
Background:
Few studies in sub-Saharan Africa have assessed the impact of multi-month dispensing (MMD) of antiretroviral therapy (ART) and dolutegravir (DTG) beyond clinical trials among children with HIV (CWHIV). We assessed the effect of the two interventions on achieving undetectable viral load (VL) among CWHIV 0-15 years in Nigeria.
Methods:...
Background: The COVID-19 pandemic resulted in disruptions to routine HIV services for youth living with HIV (YLH), provoking rapid adaptation to mitigate interruptions in care. The Adolescent Transition to Adult Care for HIV-infected Adolescents (ATTACH) study (NCT03574129) was a hybrid I cluster randomized trial testing the effectiveness of a heal...
Background:
Tuberculosis (TB) is the leading cause of death among adolescents and young adults with HIV (YWHIV). and their heightened risk warrants deeper understanding of utilization of TB-prevention measures within HIV care.
Setting:
Retrospective study using clinic surveys and medical record data from 86 Kenyan HIV clinics.
Methods:
Clinic...
HIV stigma remains a barrier in achieving optimal HIV treatment. We studied the prevalence and predictors of HIV stigma among adolescents and youth with HIV (AYWHIV) ages 15-24 years in Western Kenya. Of 1011 AYWHIV, 69% were female with a median age of 18 years. Most (59%) attended adolescent clinic days, and 40% attended support groups. One-quart...
Objective:
We estimated the effects of HIV stigma on mental health and treatment outcomes for youth with HIV (YWHIV).
Design:
Secondary analysis of data for YWHIV ages 15-24 years in Western Kenya.
Methods:
Participants completed a longitudinal survey (baseline, month 6 and 12) assessing socio-demographics, antiretroviral therapy (ART) adheren...
HIV self-testing (HIVST) can improve testing completion among adolescents and young adults (AYA), although its influence on sexual behaviors is unclear. We evaluated whether HIVST was associated with changes in talking with sexual partners about HIVST, condom use, and HIV risk perception among AYA ages 15–24 years in a study of HIVST distribution t...
Background
Transitioning youth living with HIV to adult care is a crucial step in the HIV care continuum; however, tools to support transition in sub-Saharan Africa are insufficient. We assessed the effectiveness of an adolescent transition package (ATP) to improve youth readiness for transition to independent HIV care.
Methods
In this hybrid type...
Background:
The World Health Organization (WHO) recommends tuberculosis (TB) diagnostic evaluation for children with HIV (CHIV) who have history of TB contact, poor weight gain, cough or fever. These screening criteria were developed based on studies of symptomatic CHIV with incomplete microbiologic confirmation. We performed routine TB microbiolo...
Background:
Zika virus (ZIKV), first discovered in Uganda in 1947, re-emerged globally in 2013 and was later associated with microcephaly and other birth defects. We determined the incidence of ZIKV infection and its association with adverse pregnancy and fetal outcomes in a pregnancy cohort in Kenya.
Methods:
From October 2017 to July 2019, we...
Expanding index and family-based testing (HBT) is a priority for identifying children living with HIV. Our study characterizes predictors that drive testing location choice for children of parents living with HIV. Kenyan adults living with HIV were offered a choice of HBT or clinic-based testing (CBT) for any of their children (0–12 years) of unkno...
Social support is a critical component of achieving positive health outcomes for youth living with HIV (YLWH). Mobile health (mHealth) has significant potential for providing social support to YLWH. However, little is known about the domains of social support most needed by YLWH which mHealth interventions might address. Drawing on the spontaneous...
Background
The impact of Human Immunodeficiency Virus (HIV) on pregnancy outcomes for women on antiretroviral therapy (ART) in sub-Saharan Africa remains unclear.
Methods
Pregnant women in Kenya were enrolled in the second trimester and followed up to delivery. We estimated effects of treated HIV with three pregnancy outcomes: loss, premature birt...
Background: How can we fast-track the global agenda of integrated mental healthcare in low- and middle-income countries (LMICs) such as Kenya? This is a question that has become increasingly important for individuals with lived experiences, policymakers, mental health advocates and health care providers at the local and international levels.
Discus...
Sustained viral suppression in adolescents and young adults living with HIV (AYALWH) is necessary for epidemic control. We evaluated facility and individual correlates of viral suppression using programmatic data from AYALWH between ages 10 and 24 years at 24 HIV clinics in Kenya. Binomial regression was used to evaluate correlates of viral load (V...
The health care transition (HCT) from pediatric to adult care is a potential contributor to poor clinical outcomes among adolescents living with HIV (ALHIV). In sub-Saharan Africa (SSA), there is limited information on effective tools and processes to prepare and support ALHIV through this transition. This study elicited perspectives of policy-make...
Oral HIV self-testing (HIVST) may expand access to testing among hard-to-reach reach adolescents and young adults (AYA). We evaluated community-based HIVST services for AYA in an urban settlement in Kenya. Peer-mobilizers recruited AYA ages 15–24 through homes, bars/clubs, and pharmacies. Participants were offered oral HIVST, optional assistance an...
Background:
Index case testing (ICT) for children-testing children of HIV-positive index adults-reveals a high prevalence of undiagnosed pediatric HIV; however, uptake of ICT is sub-optimal.
Methods:
During recruitment for a randomized trial (NCT03049917), data were collected from sequential clients attending HIV care regarding whether they had...
We examined patterns of disclosure among youth living with HIV (YLHIV) in Kenya, and the association between self-disclosure and antiretroviral therapy adherence, stigma, depression, resilience, and social support. Of 96 YLHIV, 78% were female, 33% were ages 14–18, and 40% acquired HIV perinatally. Sixty-three (66%) YLHIV had self-disclosed their H...
Background:
Social media can be used to support the health of underserved youth beyond clinical settings. Young people are avid users of social media, but estimates of smartphone access among youth in sub-Saharan Africa are lacking, making it difficult to determine context-appropriateness of online and social media interventions.
Methods:
We con...
Introduction:
Successfully transitioning adolescents to adult HIV care is critical for optimising outcomes. Disclosure of HIV status, a prerequisite to transition, remains suboptimal in sub-Saharan Africa. Few interventions have addressed both disclosure and transition. An adolescent transition package (ATP) that combines disclosure and transition...
Background:
Financial incentives (FI) can motivate desirable health behaviors, including adult HIV testing. Data regarding the effectiveness of FI for HIV testing in children, who require urgent testing to prevent mortality, are lacking.
Methods:
In a 5-arm unblinded randomized controlled trial, adults living with HIV attending 19 HIV clinics in...
Stakeholder engagement between researchers, policymakers and practitioners is critical for the successful translation of research into policy and practice. The Counseling and Testing for Children at Home (CATCH) study evaluated a paediatric index case testing model, targeting the children of HIV-infected adults in care in Kenya. Researchers collabo...
Introduction:
Gaps in HIV testing of children persist, particularly among older children born before the expansion of prevention of mother-to-child transmission of HIV (PMTCT) programs.
Methods:
The Counseling and Testing for Children at Home (CATCH) study evaluated an index-case pediatric HIV testing appproach. Caregivers receiving HIV care at...
Background:
Repeat HIV viral load (VL) testing is required after unsuppressed VL to confirm treatment failure. We assessed proportion of adolescents and young adults living with HIV (AYALHIV) in Kenya with a confirmatory VL test and time to repeat testing.
Design:
A retrospective analysis of longitudinal data abstracted from Kenya's national vir...
Background
Despite high efficacy of oral antiretroviral therapy (ART), viral suppression among adolescents and young adults (AYA) living with HIV in sub-Saharan Africa (SSA) remains low. Compared to daily oral ART, bimonthly long-acting injectable ART (LA-ART) may simplify adherence, improve clinical outcomes, and decrease HIV transmission in this...
Lack of health care worker (HCW) training is a barrier to implementing youth-friendly services. We examined training coverage and self-reported competence, defined as knowledge, abilities, and attitudes, of HCWs caring for adolescents living with HIV (ALWH) in Kenya. Surveys were conducted with 24 managers and 142 HCWs. Competence measures were gui...
Objectives:
To determine clinic- and individual-level correlates of viral suppression among HIV-positive adolescents and young adult (AYA) aged 10-24 years receiving antiretroviral treatment (ART).
Design:
Multi-level cross-sectional analysis using viral load (VL) data and facility surveys from HIV treatment programs throughout Kenya.
Methods:...
Objective
Tailored services for adolescents and young adults (AYA) living with HIV may improve treatment outcomes. We surveyed HIV clinics throughout Kenya to determine AYA clinic practices, disclosure and transition services.
Methods
We deployed a mobile team to conduct surveys in a random sample of 102 public HIV clinics with> 300 total clients....
Newly diagnosed HIV positive children may be unique index cases to identify undiagnosed parents. Data was used from the Pediatric Urgent Start of HAART (NCT02063880) trial, which enrolled hospitalized, ART-naïve, HIV positive children ages 0–12 years in Kenya. Exact McNemar’s tests were used to compare proportions of mothers and fathers tested for...
Expansion of access to diagnosis and treatment for human immunodeficiency virus (HIV) and a high incidence of HIV infection in adolescence has resulted in a growing population of adolescents and young adults living with HIV. The prevalence of poor retention in care, insufficient viral suppression and loss to follow-up are higher among adolescents a...
Objectives:
Identifying factors associated with mortality among acutely ill HIV-infected children presenting with advanced HIV disease may help clinicians optimize care for those at highest risk of death.
Design:
Using data from a randomized controlled trial (NCT02063880), we determined baseline sociodemographic, clinical, and laboratory cofacto...
Objectives:
Adolescents and young adults (AYA) have poorer retention, viral suppression, and survival than other age groups. We evaluated correlates of initial AYA engagement in HIV care at facilities participating in a randomized trial in Kenya.
Design:
Retrospective cohort study.
Methods:
Electronic medical records from AYA ages 10-24 attend...
Poor retention in HIV care remains a major problem for Adolescents and Young Adults (AYA). A Standardized Patient (SP) clinical training intervention was developed to improve healthcare worker (HCW) “adolescent-friendly” competencies in Kenya. Professional actors were trained to portray HIV-infected AYA according to standardized scripts. HCWs compl...
HIV incidence and mortality are high among adolescents and young adults (AYA) in sub-Saharan Africa, but testing rates are low. Understanding how support people (SP), such as peers, partners, or parents, influence AYA may improve HIV testing uptake. AYA aged 14–24 seeking HIV testing at a referral hospital in Nairobi, Kenya completed a post-test su...
Background:
Adolescent-friendly policies aim to tailor HIV services for adolescents and young adults aged 10-24 years (AYA) to promote health outcomes and improve retention in HIV care and treatment. However, few interventions focus on improving healthcare worker (HCW) competencies and skills for provision of high-quality adolescent care. Standard...
Methods:
A mixed-methods study was conducted at a tertiary hospital in Nairobi, Kenya. Three focus group discussions with health care workers (HCW) and 18 in-depth interviews with HIV-infected adults with children of unknown status were analyzed using thematic analysis. A structured questionnaire was administered to 116 HIV-infected caregivers of...
Background:
Urgent antiretroviral therapy (ART) among hospitalised HIV-infected children might accelerate recovery or worsen outcomes associated with immune reconstitution. We aimed to compare urgent versus post-stabilisation ART among hospitalised HIV-infected children in Kenya.
Methods:
In this unmasked randomised controlled trial, we randomly...
Background:
Tuberculosis (TB ) causes substantial morbidity and mortality in HIV-infected children. Sample collection and paucibacillary nature of TB in children makes diagnosis challenging. Rapid diagnostic tools using easily obtained specimens are urgently needed.
Methods:
Hospitalized, HIV-infected children ≤12 years enrolled in a randomized...
Objectives
Adolescents in Africa have low HIV testing rates. Better understanding of adolescent, provider, and caregiver experiences in high-burden countries such as Kenya could improve adolescent HIV testing programs.
Design
We conducted 16 qualitative interviews with HIV-positive and HIV-negative adolescents (13–18 years) and six focus group dis...
Objectives
To determine whether continuous quality improvement (CQI) improves quality of HIV testing services for adolescents and young adults (AYA).
Design
CQI was introduced at two HIV testing settings: Youth Centre and Voluntary Counseling and Testing (VCT) Center, at a national referral hospital in Nairobi, Kenya.
Methods
Primary outcomes wer...